Pipe threading and cutting machine.



F. A. LOVEGROVE. I PIPE TI-IRADING AND CUTTING MACHINE, I

APPLICATION FILEU MAR. 2l. ISI?. 1,244,996. Patented 001;, 30,1917.

2 SHEETS-SHEET I.

f IHM l i F. A. LGVEGROVE.

PEPE THREADING AND CUTTING MACHTNE.

APPLICATION HLED MAR. 2ll 59T?. L., Patente@ 00T. 30,1917.

- 2 SHEETS-SHEET 2.

FRANCIS AUGUSTUS novnenovnor HALIFAX, Nova scorre, CANADA.

PIPE THIBEADING A'.ND CUTTING MACHINE.

Specification of Letters I'Pate'nt.

Patented Oct. 30, 1917.

Application led March 21, 1917. -Seral No. 156,353.

To all 'whom t may concern.' y l Be itv known that I, Fnanors A. LOVE- onovn, a subject of the King of Great Britain, and a resident of Halifax, Nova Scotia, Canada, have inventeda new and Improved Pipe Threading and Cutting Machine,r of which the following is a full', clear, and eX- act description.

My invention has for its object to provide an inexpensive pipe threadin'g and cutting machine which is simple and light in construction. The machine is strong, and may hev used to'advantage either as a threading or as a cutting machine, it being possible to mount either cutters or dies in the machine, as may he desired.

Additional objects of the invention will appear in the following specification, in which the preferred form ,of the invention is disclosed.

In the drawings, similar reference characy ters denote similar parts in all the views, in

`line 4--4 of Fig. 1;

Figlre l is a view showing my machine in elevation; ,u 4

Fig. 2 is an enlarged fragmentary View illustrating the manner ot determining the position of the cutters relatively to the axis of the machine;

Fig. 3 is an enlarged sectional view on the line 3-3 of Fig. 1;

Fig. 4 is an enlarged sectional View on the Fig. 5 is a' sectional view on the line 5-5 of Fig. 3;

Figl 6 is a perspective view showing one of the dies;

Fig. 7 is a sectional view illustrating a block and a die in one piece and showing the means by which the block is mounted on the screw; and

Figs. `8 and 9 are views illustrating types of cutters which maybe employed in they machine. y i

By referring tothe drawings, it will be seen that a Jframek 10 is provided having a central opening 11 and a plurality of guideways 12 extending radially therefrom. The frame 10 at the oui/er end of each of these radial'guideways is provided with a threaded oriiice 13 in which a screw 14 meshes, the said screws losing provided for moving blocks 15 radially, these blocks being providedfor carrying dies or cutters, as may he desired.

At opposite sides f each of the guideways 12' there are guides 16 which proge'ct inwardly from the frame 10, these guides lloeing disposed in recesses 17 at the sides of the blocks 15. The radial guideways 12 and the blocks 15 `are alsorectangular in crosssection, this means, together with the recesses 17 serving to prevent any rotary I movement of the blocks 15 relatively to the i frame 10. There are recesseslSin the upper surfaces of the blocks 15, and in these recesses 18 the lower ends of the screws 11 are disposed, set screws 19 which are dis; posed in threaded orifices' in. the blocks 15, having their inner ends disposed in annular recesses 20 inthe screws 14, this means permitting the rotary movement ot the screws 14: relatively to the blocks 15.v while making certain that the. clocks 15 will he moved. ra-v dially with the-screws 14e. The outer ends oi the screws 14 are angular at 21 so that a crank or key 22 may be used. to rotate the screws 14 to move the blocks 15 radially as y may be desired. v

As has heen stated, dies or cutters may be iounted on the blocks l15 to thread or cut a pipe, as occasion may require. I n Fig. 6 of the drawings, I illustrate a die which is adapted to be attached to theblock 15, this 4the die, this rim 25 itting a groove 26 in the bottom of the block 15. The die -23 also has a pin 27 which projects upwardly from the rim25, this pin 27 {itting in an orifice 28 in the block. It will, therefore, loev seen that the die 23 is held against rotation or lateral movement rela- -tively to the block 15 when the die 23 is held upwardly with its rim 25 and its pin 27 in engagement with the groove 26 and the orifice 28 in the block. A spring clamp 29 is provided for holding the die 23 in the said position, vthis-spring 29 beingsecured to the block 15 by means of a screw 30 and' CIK having a head 31 which normallyits in the" recess 32m the faceof the die. By drawing out the headl 'from the recess 32, the die 23 may be moved downwardly and free from the block 15, afterwhich another die 23, ora cutter, may be substituted, and may be securedA in position.

In order to determine the position or' the die relativel Y to the axis 0i the central opening 11 in the frame 10, a scale 33 is in* dicated on the frame 10 at the sides of open ings 12a in the frame, which lead `to the'xrof dial Uuideways 12. There is a mark 34 on each of the blocks 15, which, in connection,

with the scale, assists the operator in determining the position of the block and the cutter relatively tothe rame. In Fig. 2 of the drawings there will be found indicated at 33a United States standard pipe scale, while inFig. 3 of the drawings the ordinary scale is indicated.

There are radial threaded orifices 35 in the frame 10, disposed substantially in the same transverse plane, the said plane being disposed in the rear of the transverse plane ot' guideways l2, screws 36 being provided which mesh in the kthreaded oriices. Casters 37 are mounted on the inner ends of these screws 36, so that the said casters may engage the pipe which is to be cut, and hold it in position while the cutting process takes place. 'tate relatively to the screw 36, and be disposed in proper position no matter how the screws 36 may be adjusted. A scale 38 is indicated on each of the screws 36, so that the positions of the casters 37 may be adjusted as wellas the positions of the dies l' 23 relatively to the axisv of the central opening 11 in the frame v10, for engagement with a pipe of predetermined diameter. outer end of each of the 4screws 36 is angular in shape, as shown at 39, which permits the turning of the 'screws 36 by the key or Al lock nut 40 is preferably mounted on the screw 36 to lock the screw 36 in position arter adjustment.

In Fig. 7 I illustrate a block and die in onepiece, the combined block and die 41 being secured to a screw 14 in the same manner as the block 15 is secured to the said screw, there being preferably a recess 42 in the -combined block and die 41 in which a member 4.3 is disposed which is `mounted on a stud 44, which is used instead ofthe screw 19, for the purpose which has been described, the lower end of the member 43 beingv secured to the combined block and die 41 by means of a screw 45.

In Fig. 8 of the drawings, I illustratea .cutter which is indicated by the reference character 46, for use in cutting soft'material, such as brass; another cutter 47 bein illustrated in Fig. 9 of the drawings w ich is provided with a cutting wheel v48. The cut- The casters 37 rwill ro- The Lacasse ters'46 and 47 are provided with the secs 24, the rims 25, the pins 27, and the recesses 32, so that they may be attached to the block 15 in the same manner as has been described with reference to the die 23. Y

Handles 48 extend radially from the frame lblby which means the frame with the dies or critters may be rotated.

llfeving thus described my invention, I claimas new and desire to .secure by Letters Patent: y

1. In a pipe threading and cuttingmachine, a frame having a central opening and a radial guideway extending therefrom, there being a threaded oriice-at the outer end of the guideway, a block for moving in the guideway, a screw articulated to the block and meshing in the' threaded orifice', there being a transverse groove in the bottom of the block and an oritice extending inwardly therefrom, a cutter having a transverse rim :fitting the transverse groove in the block and a pin extending therefrom which tits the orice inthe block, and a clamp for holding the cutter in position relatively to the block.

In a pipe threading and cuttingmachine, a frame having a central opening and a radial guideway extending therefrom, there being a threaded orifice at the outer end orn the guideway, a'block for moving in the guideway, a screw articulated to the block and meshing in the. threaded orice, a cutter, means at the bottom of the block and at the top of the cutter to prevent lateral movementr'of the cutter relatively to the block, and a clamp for securing the cutter up in positionagainst the block.

3. In a pipe threading and cutting machine,a frame having a central opening and a radial guideway extending: therefrom, there being a threaded orifice at the outer end of the guideway, a block for moving in thev guideway, a screw articulated to thev block and meshing in the threaded orifice, a cutter, kmeans at the bottom of and at the top of the cutter to prevent lateral movement of the cutter relatively to thel the block n block, there 'being a recess in the block, and

a spring clamp secured to the block and disosed in the recess. P

4. In 'a pipe threading and cutting machine, a frame having a central opening and a radial guideway extending'V therefrom, there being a threaded orifice in the frame at the outer end of the guideway, 'a block for moving in ticulated to the block and meshing in the threaded oriiice, tom of the block' and at the top of the cutter to prevent lateral movement of the cutter vrelatively to the block, there being a recess a cutter, means at the'botthe guideway, Va screw ari inthe block, a spring clamp secured to the block and disposed in the recess, and guide means at the inner sides or' the guideway 13u and at the outer sides of thevhlock to prevent rotary movement of the block relatively tothe guideway. 5. In a pipe threading and 'cutting machine, a frame having a central opening with radial guideways extending therefrom, blocks having cutters for movin in the guideways, means for moving the locks in the guideways to desired positions, there being threaded orices in the frame spaced from the radial guideWays longitudinally of the frame, screws meshing in the threadf ed orifices, and casters mounted on the screws.

6. In a pipe threadingkand cutting ma- 'scales on the screws for indicatin opening.

chine, e frame having a central opening with radial guideways extending'thererom, blocks havingv cutters for moving in the guideways, meansformoving the locks in the guideways to desired. positions, there being threaded orifices in the frame spaced from the radial guideways longitudinall ofthe frame, screws meshing in the threa ed orifices, casters mounted on the screws, scales on the 'frame at the guideways, and

the ositions of the blocks and the positions o the screws relatively to the axis of thecentral FRANCIS AUGUSTUS LOVllGrROYE.V 

